Removal of carbon disulfide from air stream by absorption combined with electrochemical oxidation

The removal of carbon disulfide (CS2) in air stream by aqueous solution absorption combined with electrochemical oxidation was experimentally investigated. A rod-to-cylinder electrochemical oxidation reactor is employed for the experiment. The sample gas was introduced into the reactor from the bottom of the reactor and leaving from the upside of the reactor. It was found that the removal rate of CS2 in NaCl solution is higher than that in Na2SO4 solution. The removal of CS2 also depended on the applied current density and the pH value of the absorption solution. A maximum CS2 removal of about 40% was achieved in 0.05 mol.L-1 NaCl solution with a pH value of 4 and applied current density is 39 mA.cm(-2). The final products of CS2 degradation were confirmed to be sulfate, carbon dioxide and a small amount of carbonyl sulfide.